
1 Sternohyoid muscle
2 Cricoid cartilage (arch)
3 Trachea
4 Cricothyroid muscle
5 Sternothyroid muscle
6 Platysma
7 Thyroid gland
8 Anterior jugular vein
9 Omohyoid muscle
10 Vagus nerve (X)
11 Esophagus
12 Common carotid artery
13 Sternocleidomastoid muscle
14 Internal jugular vein
15 Longus colli muscle
16 Phrenic muscle
17 External jugular vein
18 Vertebral artery
19 Anterior scalene muscle
20 Spinal nerves (C4, C5, and C6)
21 Intervertebral space (C6/C7)
22 Spinal nerve root (C7)
23 Middle scalene muscle
24 Zygapophysial joint (C6/C7)
25 Posterior scalene muscle
26 Longissimus capitis muscle
27 Spinal cord
28 Longissimus cervicis muscle
29 Semispinalis capitis muscle
30 Splenius cervicis muscle
31 Spinalis cervicis muscle and multifidus muscle
32 Levator scapulae muscle
33 Trapezius muscle
34 Semispinalis cervicis muscle
35 Spinous process of vertebra
36 Serratus posterior superior muscle
37 Rhomboid minor muscle
38 Splenius capitis muscle
39 Nuchal ligament

